The feel of weight comes due to the normal reaction force given by the support. Hence, the condition of weightlessness is when the normal reaction force becomes zero. So, during free fall there is no support which can provide the normal reaction. Hence, the bungee jumper feels weightless as she falls towards the earth because of the lack of support force that balances gravity.
Hence, the answer is 3.
Answer:
A. T=126N
B. T=63N
Explanation:
To determine the tension in each given blocks, we first determine the acceleration of each block. It obvious that each mass will move with the same acceleration since the string connecting them is massless.
Hence using the equation of force we have
F=ma
Where m=total mass of blocks,
a=acceleration
F= force applied in this case the tension in the string.
For a 134 identical masses with an applied force of 134N, the acceleration of each mass can be computed as
134=134m*a
a=134/134m
a=(1/m )m/s²
a. To calculate the tension in the string between the 126 and 127 block, we use the equation below
T=ma
Since the number of blocks before the string is 126, we multiply the mass of each block by 126.
Hence the tension can be computed as
T=126m*a
Since a=1/m then
T=126m*1/m
T=126N
B.To calculate the tension in the string between the 63 and 64 block, we use the equation below
T=ma
Since the number of blocks before the string is 63, we multiply the mass of each block by 63.
Hence the tension can be computed as
T=63m*a
Since a=1/m then
T=63m*1/m
T=63N
The top plate grew more positively charged as the voltage was raised, while the bottom plate became more negatively charged. Accordingly, the electron moves from the top plate to the bottom plate.
<h3 /><h3>What is a voltage?</h3>
When charged electrons (current) are forced through a conducting loop by the pressure of an electrical circuit's power source, they can perform tasks like lighting a lamp.
In a nutshell, voltage equals pressure and is expressed in volts (V). The name honours Alessandro Volta (1745–1827), an Italian physicist who developed the voltaic pile, the precursor of the modern household battery.
Early on, voltage was referred to as electromotive force (emf). This is the reason why the symbol E is used to denote voltage in equations like Ohm's Law.
The words "potential difference" and "voltage" are frequently used interchangeably. The potential energy difference between two places in a circuit might be a better way to define potential difference. How much potential energy there is to transport electrons from one specific place to another depends on the differential (measured in volts). The amount indicates the maximum amount of work that could possibly be done through the circuit.
For instance, a standard AA alkaline battery provides 1.5 V. Electrical outlets seen in most homes provide 120 V. The more electrons a circuit can "push" and do work with, the higher the voltage in the circuit.
To know more about voltage, visit:
brainly.com/question/13521443
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Mass of the system is 25.2 kg
Calculation:
F=ma
m = F/a where a = m/t^2
a=2.3/(1.3)^2 = 1.36 m/s^2
m=34.3/1.36
m=25.2 Kg
